'IT is not a core competency like HR so who cares.'

That is untrue. It is a common line, but untrue.

NAV uses a significant amount of software that is taylored to their products and processes. This is seen as a competetive advantage.

IT also tends to be the keeper of the business process detail knowledge.

NAV also sells software at a profit, see EZ-Tech.

IT Operations may/ may not be core, but application development and maintenance in many cases is a core competency.

This is true of not just NAV, but the majority of manufacturing companies.